耦合腔行波管大信号注波互作用研究与设计
doi: 10.3724/SP.J.1146.2005.01568
Design and Large-Signal Beam-Wave Interaction Research of Coupled-Cavity Traveling-Wave Tube
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摘要: 行波管中注波互作用的特点是电子的速度调制、群聚及其与高频场的能量转换等过程沿整个慢波结构连续且同时进行，这是行波管可以在很宽频带内得到大输出功率的原因。在研究冷腔特性的基础上，使用三维PIC粒子模拟软件定量分析了耦合腔行波管的大信号注波互作用过程，完成了X波段连续波行波管的设计。设计参数：工作频率7.18.5GHz，带宽18%，最大输出功率3kW。Abstract: An important characteristic of the beam-wave interaction in traveling-wave tube is that the velocity modulation and bunching of electron beam, also its energy exchange with the RF field, happen continuously and simultaneously along the whole slow-wave structure. This is why traveling wave tube can offer large output power in a very broad band. On the basis of cold cavity characteristic research, quantitative analysis of the large signal beam-wave interaction of coupled-cavity traveling-wave tube is performed using three-dimensional PIC simulation code. In addition, an X-band CW coupled-cavity traveling-wave tube is designed with the design parameters as follows：operating frequency from 7.1GHz to 8.5GHz，bandwidth 18%，the highest output power of 3kW.
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